In this video Sontronics' founder and designer, Trevor Coley, introduces their SIGMA phantom-powered ribbon microphone. Inspired by vintage mics of the 1920s and ’30s, SIGMA is a ribbon microphone for the modern age with extremely low self-noise and requiring very little gain or EQ, and it sounds fantastic on solo stringed or woodwind instruments, guitar amps and vocals, but can also be used in pairs for overhead and stereo miking of drums or piano. 

Although this is primarily a sales video there is some great information on using Ribbon mics in your recording sessions and for information on the full range of Sontronics mics click the link.